John Curl's Blowtorch preamplifier part II

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Half the superyachts over 165ft have such tables nowadays.

Example of a 205ft Icon that has two DB Fletcher's, a kapstan on the bridge deck, the multi-game table in a dedicated room on the upper deck.
All yours, if you make an offer in the vicinity of $77.5M. :clown:

(Jen Wartena , managing director of Icon, is an old class mate, nice bloke)

Whaat? Only $77.5M? What about $600.00M? :D

mine’s bigger | Sailing Anarchy
 
What the government charges responsibility for - changes over time. LLNL now has the lead responsibility to go to places like IRAN and check for indications of weapons materials and machines. Also, to test the weapons stock pile etc. The main weapons design is in New Mexico at Los Alamos Nat Lab.

But LLNL does a lot of other things as well in research on a large scale. Their web site would show all the various things going on which - if successful - gets transfered to industry for commercialization. I was fortunate enough to be accepted to work there.

During my tenure there, I spent some time in various weapons support areas (including under ground Nuclear weapons test systems in Nevada) and also a lot of project coordination on basic physics machines, such as linear accelerator R&D and magnetic fusion projects. The expertise in high energy physics is the reason LLNL was chosen to be the lead on weapons security and working the technical side of foreign weapons proliferation.

LLNL has the largest scientific computer complex in the world usually with some of the fastest and most powerful computers..... which get updated every few years. LLNL is USA's premier applied science research facility. I held a 'Green' clearance for >20 years.... the highest in the nation... above top secret.

Well, so much for myself. I'm off to see what the wizard has created else-where on this small planet. Audio remains a fun past time and a life long hobby mostly.

-Richard

And now the inevitable has finally begun to come home. That point where every branch of public/private/diy known research and science (ie physical hardware production) is hitting the artificial glass ceiling, hitting the purposely blocked layers.

It is breaking out all over the place, in hundreds of different paths.

We can even begin to say, "we're really in it now".

The system is so long in the tooth, so established and so far gone on those unimpeded paths, that it is practically definable as a separated path of humanity, defined by technology and science, driving awareness and perception. And that system is ingrained in it's old habits of cancelling out, any way it can - the public's rising awareness of the given 'most evident pathways' that are emergent.

The problem is that where there were previously only a few, maybe a dozen or more (at any given time), now there are hundreds, nay, thousands. And these people (who have been persecuted for being human and endeavoring to make a better world) are angry about this past history of how things were handled.... angry on a level that is impossible to communicate.

Consequently, the rest of the world is slowly becoming aware of this imposition, this blocking. When they understand what has done to to them, how it has twisted them over the years, bent them away from where they might have been --the hell to be paid has no chance of ever being reconciled.

It was right, it was wrong, it was and is ---a total mess.
 
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I just found an awesome deal on Mouser. It was 50 cents each for 39u/250V Kemet MMK. I ordered 50 of them, getting a quantity discount so it was $20.

Alas, it was not to be.

Good afternoon Anthony,

Thank you for ordering from Mouser. We always appreciate your business.

We tried to reach you last Friday by phone, but we unable to.

We went to place this order for you with our supplier. It appears that this part now has a minimum order and has also had a cost increase.

The minimum order is 169 pcs and it looks like the best price we have to offer you on part # 80-MMK375396K250R8L3 is $12.72.

Please let us know if you have anything else approved that we can send you in its place as alternative. If not we will need to cancel this order.

At minimum this price would have cost me $2150!
 
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Have your cake and eat it too

A discrete uA741 opamp - now you can even measure 'inside' the opamp!
Also very good for the visually impaired - this thing is HUGE.
Available for just $ 35 from Mad Scientists Labs (what's in a name anyway).

Jan
 

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Back in 1971, when I attended an analog design class at UCB, they handed out a SPICE emulation of the uA741, that was several pages thick and that printout gave me a lot of insight as to why it was so noisy. I was originally surprised that they used the uA741 as an example, since it had been out for perhaps a couple of years, as I had used them back in '69 for servo control. But, there was a lot to learn from the emulation, nonetheless. It would appear that this discrete model would behave a good deal better than the actual device, (except for slew rate), and it would be interesting to measure it, comparing it to a REAL uA741 and noting the differences.
 
? (in case you are not joking)

George
I was reading about some powerful breeders somewhere northeast .

Damage the silicon at the lattice level. reduces gain, increases leakage...TRR speeds up. (a bit similar to ion implantation to introduce lattice defects for recombination).

As a side effect, makes the circuit a bit more reliable in a radiation enviro.

jn
 
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